11143242143 has 4 divisors (see below), whose sum is σ = 12156264168. Its totient is φ = 10130220120.

The previous prime is 11143242139. The next prime is 11143242179. The reversal of 11143242143 is 34124234111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11143242143 - 2² = 11143242139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11143242743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506510996 + ... + 506511017.

It is an arithmetic number, because the mean of its divisors is an integer number (3039066042).

Almost surely, 2^11143242143 is an apocalyptic number.

11143242143 is a deficient number, since it is larger than the sum of its proper divisors (1013022025).

11143242143 is a wasteful number, since it uses less digits than its factorization.

11143242143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013022024.

The product of its digits is 2304, while the sum is 26.

Adding to 11143242143 its reverse (34124234111), we get a palindrome (45267476254).

The spelling of 11143242143 in words is "eleven billion, one hundred forty-three million, two hundred forty-two thousand, one hundred forty-three".